Machine for upsetting and like operations



Dec. 10, 1929.

Filed July 14, 1926 lNl/E/VTDR (7R1. 1705/3850! Br A TTORNEVS PatentedDec. 10, 1929 UNITED sures PATENT OFFICE KARL'A ERBAG orSAALFELDOH-TEE-SAALE, GERMANY, Assreno'n To HERMAN r. nonvst, onnnwYORK, 1v. Y.

MACHINE son Ursa 'rrrne AND LIKE OPERATIONS Application fi'i'erl m 14,1926, Serial No. 122,347, 21 in Germany July 17, 1925.

My invention relates to machines for performin operations such asupsetting, by means of a reciprocating member or plunger. It isapplicable particularly to machines for upsetting the ends of rods 'orbar's, as well as for upsetting intermediate portions of a blank,-so asto produce thereon an enlargement orcollar. The object of my inventionis to provide an arrangement which enables the plunger, or the slidecarrying such plunger, to "be stopped, after each operation, at variouspoints of itsstroke or travel, under the operatorsselective control. Theplunger slide, with this arrangemenhwill be returned automatically'afterthe upsetting operation and,'when or after passing the dead center, willcome to a stop automatically at such a distance from the backing orabutmentengaged by the blank, that after removal of the upset blank themachine will be ready for thenext operation immediately, withoutrequiring any manipulation on the part of the attendant. All theoperator has to do, is to start the machine and to insert and removeblanks during the stoppage of the machine. In view of the automaticoperation of the machine, the attendant may, while the machine is inmotion, get the next piece or blank ready for insertion into themachine, thus speeding up the operation and not only increasing'theoutput of the machine, but also diminishing, the liability ofobjectionable cooling of previously heated blanks while they are waitingto be inserted into the machine.

The inventioncomprises a special stop device, adjustablecircumferentially of a rotary member whichcontrols the operationof theupsetting slide, said stop co-operating with a clutch-shifting mechanismto bring about the stoppage of the machine, the exact time of suchstoppage being determined, at

I the operators selection, according as the said stopiis'adjusted todifferent positions circumiferentially of said rotary '-contro1lingmember; When the "end of the blank is to be upset, it generallypreferable to let the plungor slide continue its return movement forsometime after the end ofthe upsetting operation; when howeverintermediate portions of the blank are to be upset, it is desirable, asa rule, to arrest the machine when the plunger has just completed itsupsetting operation, that is to say, when the eccentric employed inmachines of this character is in its dead center position.

Two satisfactory examples of my present invention will now be describedin detail with reference to the accompanying drawings, in which Fig. lis a side elevation illustrating one from of my invention, and Fig. 2 isan end elevation thereof, with parts in section; Fig. 3 is a sideelevation showing another embodiment of my invention, and 'Fig. 4 is anend elevation of such second embodiment.

At 10 I have indicated the body or frame of the machine, provided withlongitudinal tracks or guideways 11 for the reciprocating slide 12carrying the plunger 13, which may be of any customary or approvedconstruction and operates to upset the blank against a suitable backingor abutment 14L, likewise of any customary or approved construction. Theslide 12 is operated by means of a rod 15 from an eccentric 16 on ashaft 17, this general type being well-known in the art. The shaft 17 isjournaled in a bearing 18 on the body or frame 10, and also in anotherbearing provided in a standard 19. On said shaft mounted'loosely so thatit may rotate thereon, yet held against longitudinal motion, a pulley 20adapted to be rotated continuously by a driving belt 21, said pulleyhaving a clutch member adapted to be engaged by a companion clutchmember 22 likewise mounted loosely on the shaft 17 and adapted not onlyto rotate thereon but to slide lengthwise thereof, into and out ofengagement with the clutch formation on the driving pulley 20. Theclutch member 22 is splined or otherwise connected with a pinion 23mounted loosely on the shaft 17, in such .a manner that the parts 22 and23 are compelled to rotate in unison, but'the pinion will be heldagainst movement lengthwise of the shaft 17, the member 22 slidinglengthwise relatively to said pinion as the clutch is being thrown in orout. The pinion meshes with a spur gear 24 integral or rigid with apinion 25 meshing case is secured with a spur gear 26 mounted rigidly onthe shaft 17, said wheels 24 and 25 rotating about an axis parallel tosaid shaft.

On the gear wheel 26 is provided an actuating plug 27 whose function isto throw out.

the clutch and thus stop the shaft 17 and the plunger 13 at the desiredmoment. This lug is adapted to come in contact with a companion lug 28on the clutch lever 29, fulcrumed at 30 and having the well-known forkedend engaging the clutch member 22 at a groove, or any other suitableconnection for shifting the clutch member 22 lengthwise of the shaft 17The lever 29 has a pin-and-slot connection 31 with a foot lever 32fulcrumed at 33 and provided with a treadle 34. The connections are soarranged that depression of the treadle will shift the member 22 intoengagement with the pulley 20 and thus start the machine, while thelug27, when it comes against the lug 28 during the rotation of the shaft17, will shift the member 22 out of contact with the driving pulley 20and thus stop the machine, this movement of the lug 28 also bringing thetreadle 34 back to its upper posi tion. It will be understood t iat thelugs 27 -28 have surfaces beveled in the proper direction to effect theoperation described above.

The actuating lug 27, which thus forms part of a device for stopping theshaft 17 may be adjusted to different positions circumferentially of thegear wheel 26. For this purpose I may provide said wheel with aplurality of surfaces or seats 35 to fit the corresponding surface ofthe lug 27 which in this detachably to any one of said seats 35, at theoperators selection, in any suitable manner, for instance by means ofscrews 36 passing through said lugs and fitted into threaded openings37.

By shifting the lug 27 oircumferentially of the wheel 26, I may stop theshaft 17 selectively at different points of the travel or stroke of theplunger 13. Thus, I may arrange to have such plunger stop automaticallyat or near the dead center, that is practicalv 1y coincident with themoment that the upsetting operation is completed. This, as statedhereinbefore, is the preferred way when the upset portion of the blankis an 1ntermediate portion thereof. IVhen, however, the end of the blankis to be upset, the actuating lug 27 will generally be set in such a waythat the machine will not be stopped until the plunger has gone amaterial distance beyond the dead center position of the eccentric 16.

Instead of making the actuating lug detachable for the purpose ofadjusting it to difierent circumferential positions, I may provide aconstruction in which the said lug will remain permanently on the rotarymember carrying it, but will still be adjustable oircumferentiallythereof. An instance of such a construction is shown in Figs. 3 and 4.Here the actuating lug 27 is mounted, not on the gear wheel 26, but on adisk 38 which is normally held rigid with the shaft 17, as by set screws39, so that said disk and actuating lug will rotate with the shaft.loosening the set screws, the disk 38 is freed for circumferentialadjustment, so that the actuating lug 27 may be brought to any desiredposition oircumferentially, with respect to the position of theeccentric 16. The result will be, of course, a change in the timing ofthe stop mechanism of which said lug forms a part. In the specificconstruction illustrated by Figs. 3 and 4, the lug 27 is adapted toengage the beveled end of a lever 40 fulcrumed on the body or frame 10at 41, thus swinging said lever and, through the medium of a link 42 anda crankarm 43 held to turn with the foot lever'32, operating said footlever in such a direction as to raise the treadle 34 and shift theclutch member 22 into the released position to stop the shaft 17 Theoperation, in either of the examples illustrated, will be as follows:The actuating lug 27 or 27 is set to the proper position, as required bythe particular work to be done, oircumferentially on the rotary membercarrying such lug, with respect to the position of the eccentric 16. Theblank, having been heated in any well-known or approved manner, isplaced in the die or backing 14, and the treadle 34 is depressed. Thiswill start the machine, and the operator is relieved of furtherattention until the machine is stopped automatically by the action ofthe lug 27 or 27 on the parts co-operating therewith. The operator isthus free to devote his time to heating or otherwise preparing the nextblank, and the output of the machine is thus increased, besides insuringa better and more uniform quality of the work as there is no loss oftime during which the blank might cool ofi' to a point impairing theefliciency of the operation.

Various modifications may be made without departing from the nature ofmy invention as set forth in the appended claims.

I claim: 7

1. In a machine for upsetting and like operations, a rotary member,blank-working mechanism operated by said member and including anabutment and a plunger movable relatively thereto, a device for stoppingthe rotation of said member, and an actuator for said stop device, saidactuator beingheld to rotate with said rotary member and adjustable todifferent positions oircumferentially of said rotary member to vary thestoppage of said plunger relatively to said abutment.

2. In a machine for upsetting and like operations, a shaft, an eccentricthereon, blank-working mechanism operated by said eccentric andincluding an abutment and a plunger movable relatively thereto, a devicefor stopping the'rotation of said shaft, and

an actuator for said stop device, held to rotate With said shaft andadjustable circumferentially to different positions relatively to theposition of said eccentric, to Vary the stoppage of said plungerrelatively to said abutment.

3. In a machine for upsetting and like operations, a rotary powertransmitting member, blank Working mechanism operated by said member, adevice for stopping the rotation of said member, a disk arranged torotate With said power transmitting member and adapted to be rotativelyadjusted relatively thereto, and an actuator for said stop device fixedupon said disk and adjustable thereby about the axis of rotation of saidpower transmitting member to difi'erent fixed positions to Vary thetiming of the stoppage of such member.

In testimony whereof I have hereunto set my hand.

KARL AUERBACH.

